Name: ________________________ Class: ___________________ Date: __________ ID: A

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PAP Biomolecule Exam 2015-2016

Multiple ChoiceIdentify the choice that best completes the statement or answers the question.

____ 1. The enzyme amylase will affect the breakdown of carbohydrates, but it will not affect the

breakdown of proteins. The ability of an enzyme molecule to interact with specific molecules is most directly determined by the _____.

a. Amount of oxygen in the molecule d. Shapes of the molecule involvedb. Number of molecules involved e. Amount of carbon in the moleculec. Sequence of bases present

____ 2. Beeswax is a waxy substance that is produced by bees and then harvested by humans for a

variety of uses. Ancient Romans used beeswax as a waterproofing agent because it is not water-permeable. Beeswax is an organic molecule made up of which of the monomers below?

a. Amino Acids d. Nucleotidesb. Monosaccharides e. Proteinsc. Fatty Acids

____ 3. Lemurs only live on the island of Madagascar. However, fossil evidence shows that lemur

ancestors existed on Africa’s mainland. Scientists hypothesize that lemur ancestors reached Madagascar by floating across the Moxambique Channel on matted clumps of vegetation. Lemurs’ bodies are adapted to efficiently store energy for times when food is scarce. This adaptation may help to explain how lemur ancestors survived the trip across the Mozambique Channel from mainland Africa to Madagascar. Which of the following types of molecules are primarily used for long-term energy storage in the lemur? (SE 9A)

a. lipids d. amino acidsb. monosaccharides e. proteinc. nucleic acids

Name: ________________________ ID: A

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____ 4. In the human body, fibrinogen is necessary for sealing cuts and stopping the loss of blood. Since

fibrinogen is a protein, which best describes its molecular structure?

a. A group of six carbon atoms joined in a ring

d. A sequence of nitrogenous bases attached to a sugar-phosphate backbone

b. A chain of amino acids folded and twisted into a molecule

e. A group of phosphates bonded together by hydrogen bonds

c. A set of three fatty acid chains attached to a glycerol molecule

____ 5. A biomolecule that is a large, complex set of chains composed of alternating subunits like the

one below called nucleotides, has which of these functions in the cell?

a. Storing energy d. Storing genetic informationb. Catalyzing chemical reactions e. Providing quick energyc. Building tissue

____ 6. Like complex carbohydrates, proteins are biomolecules that serve many functions and can be

chemically broken down and restructured. Both proteins and complex carbohydrates are which of the following?

a. polymers of smaller subunits d. nucleotides of DNAb. sequences of sugars e. monomers of larger unitsc. lipids of large molecules

____ 7. A chemist, during the course of an analysis, runs across a chemical that he determines to be

composed of a 1:2:1 ratio of carbon, hydrogen, and oxygen. It is probably

a. A pentose d. A monosaccharideb. An amino acid e. A nucleotidec. A fatty acid

Name: ________________________ ID: A

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____ 8. Which statement describes a major role of lipids in a body cell?

a. They make DNA d. They are the main structural component of the cell membrane

b. They transport molecules throughout the cell

e. They provide a fast source for quick energy

c. They speed up chemical reactions in the cell

____ 9. Which organic compound is best described by the following characteristics? - stored as energy in the forms of glycogen and starch - found as cellulose in plant cell walls and chitin in the exoskeleton of arthropods - includes the monomer glucose a. protein d. lipidsb. nucleic acids e. not an organic compoundc. carbohydrates

____ 10. What is structure X representing? a. substrate d. complexb. enzyme e. chemical reactionc. active site

____ 11. What is structure W representing?

a. substrate d. complexb. enzyme e. chemical reactionc. active site

Name: ________________________ ID: A

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____ 12. Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly’s tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical reaction that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light. Which of the following best describes how the luciferase enzyme speeds up the chemical reaction?

a. Luciferase increases the amount of time the light is visible.

d. Luciferase decreases the temperature of the environment inside the body of the firefly.

b. Luciferase decreases the amount of energy required for the reaction to start.

e. Luciferase increases the amount of energy required for the reaction to start.

c. Luciferase increases the number of sites on luciferin that must bind to oxygen.

____ 13. Lactose is found in milk products. It is converted by the body into a usable form in a series of chemical reactions. The diagram shows the series of reactions that convert lactose into a usable form.

Lactose(Enzyme 1)Galactose(Enzyme 2)Galactose-1-phosphate(Enzyme 3)Glucose-1-phosphate

a. Lactose c. Galactose-1-phosphateb. Galactose d. Glucose-1-phosphate

____ 14. In the illustration above, the plasma membrane is allowing amino acids, oxygen, and sugar to enter while it is releasing wastes. Which of the following best describes the action of the plasma membrane? a. It is constructing new cells inside b. It is making more room for organelles to develop c. It is building ATP d. It is dividing e. It is maintaining a balance in the cell

Name: ________________________ ID: A

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____ 15. Prokaryotes lack...a. cytoplasm. d. genetic material. b. a plasma membrane. e. a cell wall. c. a nucleus.

____ 16. The diagram below shows how a paramecium maintains homeostasis. A paramecium normally lives in a hypotonic environment in which water continually diffuses into the cell. To maintain homeostasis, the paramecium must pump out large amounts of water using its contractile vacuole.

If the paramecium is then placed in a hypertonic environment, which of the following will occur? a. Water will diffuse into the paramecium. b. Water will diffuse out of the paramecium. c. Salt will be pumped out of the paramecium by the vacuole.d. Salt will be pumped into the paramecium by the vacuole.e. None of the above.

____ 17. In the human body, muscle cells have an increased need for energy during exercise. To help supply this energy, the body will immediately increase- a. the breathing rate to supply more oxygen to the cells. b. the need for waste products to be retained.c. activity in the nervous system to stimulate the intake of nitrogen.d. blood flow to the surface of the skin to release heat. e. blood flow inward toward the internal organs to retain heat.

____ 18. Which of the following structures is a part of ALL cells? a. mitochondria d. vacuole b. cell membrane e. cell wall c. Golgi body

____ 19. Miguel is looking at cells through a microscope. His teacher, Mrs. Sheng, has told him that he is viewing either a tomato cell or a bacterial cell. Mrs. Sheng would like Miguel to answer some questions about the cell he is looking at.

Read the information above. Mrs. Sheng asks Miguel to figure out what type of cell he is viewing. What cell structure should Miguel be looking for to determine whether this cell came from a tomato plant and not a bacterium?a. ribosomes d. nucleusb. cell wall e. plasma membrane c. DNA

Name: ________________________ ID: A

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____ 20.

What type of energy is represented at S?a. heat energy d. light energyb. chemical energy e. all of the above c. electrical energy

____ 21. What compound is most likely found at W?a. ATP d. sunlightb. water e. radiation c. oxygen

____ 22. A prokaryotic cell is different from a eukaryotic cell in that-

a. a prokaryotic cell contains a single membrane-bound organelle, and a eukaryotic cell contains multiple membrane-bound organelles.

b. a prokaryotic cell contains a nucleus, and a eukaryotic cell does not contain a nucleus.

c. a prokaryotic cell contains free ribosomes, and a eukaryotic cell does not.d. a prokaryotic cell contains more space than a eukaryotic cell.e. a prokaryotic cell contains fewer genes than a eukaryotic cell.

____ 23. Which of the following pairs of terms are NOT related?a. Mitochondria: production of ATP d. Ribosomes: converts glucose into

carbon dioxide & waterb. Chloroplasts: production of glucose e. All of these terms are related to each

otherc. Cell membrane: maintain homeostasis

Name: ________________________ ID: A

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____ 24.

The picture shows a cell model and the solutions associated with it. In this situation the cell model will___.a. gain mass d. start to vibrateb. shrink e. explode c. increase in solute content

____ 25. The cell membrane contains channels and carriers that help move materials from one side to the other. What are these channels and carriers made of?a. carbohydrates d. proteins b. lipids e. nucleic acidsc. bilipids

____ 26.

Which conditions shown above might cause a cell to burst?a. A c. Cb. B d. D

Matching

a. fatty acids and glycerol c. amino acidsb. monosaccharides d. nucleotides

____ 27. monomer of proteins

Name: ________________________ ID: A

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____ 28. monomer of lipids

____ 29. monomer of carbohydrates

____ 30. monomer of DNA

a. proteins c. carbohydratesb. nucleic acids d. lipids

____ 31. Long term energy storage

____ 32. Structure, repair

____ 33. Source of most of our energy

____ 34. Store & transmit genetic information

____ 35. Protein synthesis

____ 36. Make up cell membrane

____ 37. Enzymes

a. Carbohydrate c. Proteinb. Lipid d. Nucleid Acid

____ 38.

____ 39.

____ 40.

____ 41.

Name: ________________________ ID: A

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____ 42.

ID: A

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PAP Biomolecule Exam 2015-2016Answer Section

MULTIPLE CHOICE

1. ANS: D9C

PTS: 1 2. ANS: C

9A

PTS: 1 3. ANS: A

9A

PTS: 1 4. ANS: B

9A

PTS: 1 5. ANS: D

9A

PTS: 1 6. ANS: A

9A

PTS: 1 7. ANS: D

9A

PTS: 1 8. ANS: D

9A

PTS: 1 9. ANS: C

9A

PTS: 1 10. ANS: A

9C

PTS: 1

ID: A

2

11. ANS: C9C

PTS: 1 12. ANS: B

9C

PTS: 1 13. ANS: B

9C

PTS: 1 14. ANS: E

4B

PTS: 1 15. ANS: C

4A

PTS: 1 16. ANS: B

4B

PTS: 1 17. ANS: A

4B

PTS: 1 18. ANS: B

4A

PTS: 1 19. ANS: D

4A

PTS: 1 20. ANS: D

9B

PTS: 1 21. ANS: A

9B

PTS: 1 22. ANS: E

4A

PTS: 1

ID: A

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23. ANS: D4B

PTS: 1 24. ANS: B

4B

PTS: 1 25. ANS: D

4B

PTS: 1 26. ANS: B

4B

PTS: 1

MATCHING

27. ANS: C PTS: 1 28. ANS: A PTS: 1 29. ANS: B PTS: 1 30. ANS: D PTS: 1

31. ANS: D PTS: 1 32. ANS: A PTS: 1 33. ANS: C PTS: 1 34. ANS: B PTS: 1 35. ANS: B PTS: 1 36. ANS: D PTS: 1 37. ANS: A PTS: 1

38. ANS: D PTS: 1 39. ANS: A PTS: 1 40. ANS: C PTS: 1 41. ANS: B PTS: 1 42. ANS: A PTS: 1